/*
* Returns an empty CityResult object if a city is found,
* if not, potential next letters and cities are returned if a partial
* match is found.
*/
public ICityResult Search(String key)
{
int level;
int index;
int length = key.Length;
TrieNode pCrawl = root;
CityResult result = new CityResult();
for (level = 0; level < length; level++)
{
if (pCrawl == null)
{
return(result);
}
index = GetIndex(key, level);
pCrawl = pCrawl.children[index];
}
/*
* If there is an exact match, the object lists will remain empty and the CityFound flag will be set to true.
*/
if (ExactMatch(pCrawl))
{
result.CityFound = true;
}
/*
* Indicates the prefix does not match any city and there are no next character suggestions
* so just return the empty result
*/
if (pCrawl == null)
{
return(result);
}
/*
* Have not been able to find a city so return the next
* three characters and cities
*/
bool isLast = IsLastNode(pCrawl);
if (!isLast)
{
result.NextCities = AutocompleteCities(pCrawl, key);
}
result.NextLetters = AutocompleteCharacters(pCrawl);
return(result);
}
/// <summary>
/// Convinience method to Get, Deserialize and Parse a JSON Object.
/// </summary>
/// <param name="URL">The URL of the API</param>
/// <param name="searchString">The inputted search string so far</param>
/// <returns>A List of City objects</returns>
public virtual CityResult GetDeserializeParse(string searchString, string url)
{
try
{
var deserializedJSON = Deserialize(GetJSON(url));
CityResult cityResult = ParseToCityResult(deserializedJSON, searchString);
return(cityResult);
}
catch (Exception e)
{
return(null);
}
}
public ICityResult Search(string searchString)
{
searchString = searchString.ToUpper();
ICollection <string> cities = new HashSet <string>();
for (int i = 0; i < 1000000; i++)
{
cities.Add(i.ToString());
}
cities.Add("BANDUNG");
cities.Add("BANGUI");
cities.Add("BANGKOK");
cities.Add("BANGALORE");
cities.Add("LA PAZ");
cities.Add("LA PLATA");
cities.Add("LAGOS");
cities.Add("LEEDS");
cities.Add("ZARIA");
cities.Add("ZHUGHAI");
cities.Add("ZIBO");
ICityResult cityResult = new CityResult();
foreach (string c in cities)
{
if (c.Contains(searchString))
{
cityResult.NextCities.Add(c);
if (searchString != c)
{
string letter = c.Substring(searchString.Length, 1);
if (!cityResult.NextLetters.Contains(letter))
{
cityResult.NextLetters.Add(letter);
}
}
}
}
return(cityResult);
}
public static void Main()
{
CityResult result = new CityResult();
InitDatabase db = new InitDatabase();
UserInput cityName = new UserInput();
string input;
input = cityName.InputName();
result = (CityResult)db.Search(input);
//Set up to cycle through both collections within CityResult
var namesAndLetters = result.NextCities.Zip(result.NextLetters, (first, second) => first + ", Next Char: " + second);
foreach (var item in namesAndLetters)
{
Console.WriteLine("City: {0}", item);
}
}
/// <summary>
/// Searches the specified search string.
/// </summary>
/// <param name="searchString">The search string.</param>
/// <returns>
/// A city result that contains a list of all matching cities and a list of allowable next characters.
/// </returns>
public ICityResult Search(string searchString)
{
if (!_validator.IsValid(searchString))
{
throw new ArgumentOutOfRangeException(nameof(searchString), InvalidInputErrorMessage);
}
var cityList = _cityListRepository.GetCities();
var cities = _cityNameFinder.FindAllCitiesBeginningWithSubstring(cityList, searchString);
var validNextLetters = _cityNextLetterHelper.GetNextLetters(cities, searchString);
var cityResult = new CityResult
{
NextCities = cities.ToList(),
NextLetters = validNextLetters.ToList(),
};
return(cityResult);
}
/// <summary>
/// Queries the API, given a search-string, returning a CityResult object.
/// </summary>
/// <param name="searchString">The partially completed string to be search</param>
/// <returns>CityResult object, containing the next letters, and next city names as lists of strings</returns>
public ICityResult Search(string searchString)
{
CityResult deserializedJSON = new CityResult();
while (1 == 1)
{
try
{
string url = baseURL + searchString + types + "&key=" + apiKey.keyString;
JSONHandler jsonHandler = new JSONHandler();
deserializedJSON = jsonHandler.GetDeserializeParse(searchString, url);
return(deserializedJSON);
}
catch (Exception e) {
Debug.Write("Request unsuccessful. Retrying & Printing e.Source: \n" + e.Source);
Console.WriteLine(e.GetType().FullName, "\n", e.Message);
}
}
return(null);
}
